Title :
High efficiency flexible Cu(In,Ga)Se2 solar cells
Author :
Reinhard, Patrick ; Chirila, A. ; Pianezzi, F. ; Nishiwaki, Shiro ; Buecheler, Stephan ; Tiwari, Ayodhya N.
Author_Institution :
Lab. for Thin Films & Photovoltaics, Swiss Fed. Labs. for Mater. Sci. & Technol., Duebendorf, Switzerland
Abstract :
Thin film solar cells based on Cu(In,Ga)Se2 absorber material have shown conversion efficiencies above 20% when fabricated on rigid glass substrates. On flexible substrates, challenges in deposition of high quality absorbers have for long limited the device efficiency to lower values. Nevertheless, our group recently achieved a 20.4% world record efficiency on a flexible polyimide substrate. This paper reviews the progress that has led to such high performance, while highlighting advantages and challenges of using flexible substrates to manufacture high efficiency CIGS solar cells.
Keywords :
copper compounds; gallium compounds; indium compounds; liquid phase deposition; semiconductor growth; semiconductor thin films; shear modulus; solar cells; ternary semiconductors; CuInGaSe2; SiO2; conversion efficiency; flexible polyimide substrate; high efficiency flexible solar cells; high quality absorbers; rigid glass substrates; thin film solar cells; Glass; Laboratories; Photovoltaic cells; Polyimides; Steel; Substrates;
Conference_Titel :
Active-Matrix Flatpanel Displays and Devices (AM-FPD), 2013 Twentieth International Workshop on
